What is the Least Common Multiple of 393 and 411?
Least common multiple or lowest common denominator (lcd) can be calculated in two way; with the LCM formula calculation of greatest common factor (GCF), or multiplying the prime factors with the highest exponent factor.
Least common multiple (LCM) of 393 and 411 is 53841.
LCM(393,411) = 53841
Least Common Multiple of 393 and 411 with GCF Formula
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 393 and 411, than apply into the LCM equation.
GCF(393,411) = 3
LCM(393,411) = ( 393 × 411) / 3
LCM(393,411) = 161523 / 3
LCM(393,411) = 53841
Least Common Multiple (LCM) of 393 and 411 with Primes
Least common multiple can be found by multiplying the highest exponent prime factors of 393 and 411. First we will calculate the prime factors of 393 and 411.
Prime Factorization of 393
Prime factors of 393 are 3, 131. Prime factorization of 393 in exponential form is:
393 = 31 × 1311
Prime Factorization of 411
Prime factors of 411 are 3, 137. Prime factorization of 411 in exponential form is:
411 = 31 × 1371
Now multiplying the highest exponent prime factors to calculate the LCM of 393 and 411.
LCM(393,411) = 31 × 1311 × 1371
LCM(393,411) = 53841
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